Cryogen transfer coupling with adjustable throttle valve for rotating machinery

Abstract From the Canadian patent

A relatively rotatable coupling apparatus is disclosed for conveying fluid from a stationary reservoir to a rotatable member. An adjustable throttle valve is operably connected intermediate of the coupling apparatus and the rotatable member for controlling the flow of fluid from the reservoir to the rotatable member. The relatively rotatable coupling apparatus has a first conduit portion connected to the reservoir defining an inlet flow path and a second conduit portion connected to the rotatable member defining a discharge flow path for the fluid. The first and second conduit portions are interconnected in an overlapping radially spaced apart relation by rotatable interconnecting means to …